• Flu shots can be given to children 6 months and older.

• A nasal-spray vaccine can be given to healthy children 2 years and older.

• Children younger than 5 years who have experienced wheezing in the past year – or any child with chronic health problems – should get the flu shot, not the nasal-spray vaccine.

• Children younger than 9 years old who get a vaccine for the first time need two doses.